Sash lock



Mar. 2n, 1923. 1,449,017

H. E. SMITH SASH LOCK Filed Apr. 5, 1922 locking member must drag through the frame in order to move the sash, which is practically an impossibility;

Figure 5 is a sectional view on line 5-5 ot Figure 3;

Figure 6 is a detail view of one ot the locking members;

Figure 7 is a detail view of the carrying plate.

Referring` to the drawings. l designates a carrying; plate, which may be any suitable shape or size, and may be constructed ol any suitable sheet metal, preferably oit g ot an inch in thickness. ln fact it is preferable to construct this carrying plate of aluminum, though any other metal, such as steel or brass may be used. Preferably the carrying; plate is substantially trian@ liar in formation, and pivota-lly mounted upon seiL plate by means of eyelt rivets 2 are loclring` members 3. Mounted through the carrying` plate is an eyelet 4, which is arranged on the plate at a point between the adjacent edges or the locking members 3? thereby not only consti tuting an abutment 'for the adjacent edges ot thelocking members, b also constitutinn; means for the reception ot a fasteningl screw 5, which is in addition to the tastening screws 6 passing through the eyelet rivets previously mentioned. Screws or nails may be used to pass through the eyelets. for holdingr the loclr to the sash, Vpreierably screws,

due to the fact that they are more secure.

lt will be noted that the locking members 3 have their locking ends provided with teeth 8, and when the sash loclr is applied to the sash? the locking members engage be tween the sash retaining' strip 9 and the tace of the side stile oi.' the sash, whereby the lockingtoothed ends of the loclrinp; members may engage with the bottom of the sash ,ouide groove ot the window frame. The locking members 3 are provided with apertures or openings l0, while the carrying plate l is provided with similar openings or apertures ll. When the lock is to be applied to a window sash, the locking members are actuated to positions, whereby the openings or apertures ll may register with the openings or apertures l0. Metal pins, nails or pieces of wire or any other 'form of in struments lla may enter the registering' apertures or openings l0 and ll, to hold the locking' members in corresponding' rela tive positionse The locking; device with the members held in their proper positions may then be lastened to the stile of the window sash, the toothed ends of the locking members having; been inserted between the retaining` strip and the face of the sash. In other words while the locking members are so disposed with relation to the carryingv screws, nails or the like preferably the former are inserted through the eyelets and penetrated into the stile of the window sash. lt is obvious that the screws. nails or other fastening` means may be d ven home very secure and will not deter e eyelet rivets to extent as to t friction on the pivoted locking' members.

The larger ends of the locking; members, that is to say the ends which are pivoted to the carrying plate are provided with laterally extending;` ears or finger and thumb neces l2 and These lineer or thumb ears have openings or apertui h the eye-let DU oil screws. .ln `tact, since the scr w wiich passes through the eyelet or tje carryingy button head type, the heed of plate oit the the screw e tends substantial distance over the margfgin ot tl eyelet, so :is bowed portion et' the sprinr4 prevoir of t to overlie the the look has been apoliecin the above tedx the pins, n s or pieces o are withdrawn from the openings l0 and ll, in which case the locking members are tree to be actuated, and are tree to assume looking; enna jeinents with the channels or c ooves of the window iframe.

ln order to move the sash, the thumb and fore linger are applied to the ears of the locking; members in which case the loclrinnj member are moved in directions from each other. thereby disenn'a `.heir toothed ends from. the bottom ot the `snide groove or channel oit the iframe hen the locking members are dis-en the channel or `guide groove of tr me. the sash is tree to move berneiuaioularly in either directiona It an attemng is mace raise the sash without moviio' t.; locking' memliers away ifroin each other. and suilicient pressure au plied cause one or tie other oit the locking' members to move until one ot its edges contacts with the center eyelet which receives che main holdingscrew or nail, further movement ot the locking member is prevented, ln applying* this pressure, the toothed end or the lockinginember will force itself `nto the bottoni of the channel or ve of t le window iframe, and will practically prevent further movement of the sash. `ln fact if the sash is forced, when the toothed end of the locking member is embedded or forced into the bottom of the groove, the locking member will haveto drag through atleast of an inch of the wood of the frame, which is practically impossible. In this way, it is obvious that the sash lock is positive in its action.

ln order to raise the sash it is necessary to apply pressure by means of the thumb and fore :Hunger on the opposed thumb and linger pieces or ears 1,2 and 13, for the purpose of separating the toothed ends of both 'locking members, in other Words to force them further apart. lllhen the locking members are so moved the sash is free to be raised or lowered, and linst as soon as pressure upon the thumb and finger pieces is released, the toothed ends ot the locking members can engage the bottom of the guide groove or channel of the frame. Pressure is applied upon the thumb and linger pieces with one hand, While the sash may be raised or lowered with the other hand, and when the locking members are released they will automatically spring into locking position, and retain the sash in the position to Which it has been adjusted.

Obviously the sash lock practically acts as a sash Weight, prevents rattling, and when the lool; is applied to the bottom sash, which is usually the case, although a lock may also be carried by the top sash, it acts as a Window prop and obviates the necessity of weights.

fr sash lock of this kind can be applied to the sash very easily and by any one who is capable of using a screvv driver or hammer, and since the various parts are preferably constructed by punch and die Work, all castiiigs (usually employed in other constructions of locks) are eliminated.

The invention having been set forth, What is claimed'iszl, As an article of manufacture, a sash loch comprising a carrying plate, a fastening device to secure the plate to the face of the sash stile. a pair of locking members having locking ends to engage the bottoms of the sash lguide grooves of thewvindoiv frame, means pivoting the locking members te the carry? plate, tensioning means for the locking members, said fastening means for the plate constituting an abutment with which either one of said locking members may engage, to limit the movement of the locking member in case its locking end has been forced into the bottom of the guide fastening the plateto the face of the sash.

stile, pair of locking members having loclr ing ends adapted to engage the bottom of the sash guide groove, means for pivoting the locking members on the carrying plate, fastening devices passing through the'pivoting means to additionally secure the loci:` to the sash stile, `said pivoting means actingt'o prevent the additional fastening` means from causing friction between the locking members and the carrying plate When they are moved and tensioning"meansfor the lock-` ing members to hold their locking ends in engagement with the guide groove.

3. ris anl article of manufacture, a sash lock, comprising a carrying plate, means for fastening theplate to the face of the sash stile, a pair of locking members having locking ends adapted to engage the bottom of the sash guide groove, means for pivoting the locking members on the carrying` plate fastening devices `passing through the pivoting means to additionally secure the lock to the sash stile, said pivoting means acting to prevent the additional fastening means from causing friction between the locking members and the carrying plate when they are moved, tensioning means for the locking members to hold their locking ends in engagement with the guide groovesaid first named fastening means for the plate acting as an abutment With which one edge of either of the locking members may engage for limiting the movement of the locking member, in case its locking end has embedded itself into the bottom of the guide groove.

l. As an article of manufacture, a sash lock, comprising a carrying plate, means for fastening the plate to the face ofthe sash s iile, a pair of locking members khaving locking ends adapted to engage the bottom of the Ouidenroove` means for ivoting b 0 f c,

'the locking members on the carrying plate,

fastening devices passing through the pivoting means to additionally secure the lock to the sash stile, said pivoting means acting to prevent the additional fastening means from causing friction between the locking `members and the carrying plate when they are moved, tensioning lmeans for the locking members to hold their locking ends in engagement with 'the guide groove. said tensioning means comprising a bowed spring, the bowed portion of which contacts vwith the first named fastening means to hold the tensioning means in position. i

As an article of manufacture, sash lock, comprising a carrying plate, means for fastening the plate to ,the face of the sash stile, a pair of locking members having lovin ing ends adapted to engage the bottom of the sash guide groove, means for pivoting the locking members on the carrying plate, fastening devices passing through the pivotmeans to additionally secure the lock to the sash i stile, said pivoting means acting to preventy `the additional fastening means from causing friction between the looking members and the ing means for the plate acting as an abut- 10 carrying plate vwhen vthey are moved, ment with which one edge 'of either o the tensioning means for the locking members locking members may engage for limiting to hold therloeking ends in engagementwith the movement of the locking member, in the guide groove, said tensioning means oase its locking end has embedded itself into comprising a bowed string, the bowed porthe bottom of the guide groove. 15 tion of which contacts with the first named In testimony whereof I hereunto aiix my fastening means to hold the tensioning signature.

means in position, said first named fasten- HOWARD B. SMITH. 

